Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2021 1 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/14/2021   18:32:29   (  -0.01, -75.19) (  -0.48, -77.21)  231.10                80
 01/15/2021   18:16:24   (  -0.01, -75.19) (   0.53, -72.68)  285.87                80
 01/17/2021   06:38:13   (   0.01, -75.20) (   0.62, -77.96)  314.13                80
 01/18/2021   06:16:48   (   0.01, -75.21) (  -0.40, -73.43)  203.15                80
 01/19/2021   18:38:45   (  -0.01, -75.23) (  -0.80, -78.73)  398.94                80
 01/20/2021   18:22:40   (  -0.01, -75.25) (   0.22, -74.20)  118.95                80
 01/22/2021   06:44:28   (   0.01, -75.27) (   0.93, -79.48)  479.61                80
 01/23/2021   06:23:04   (   0.01, -75.28) (  -0.09, -74.95)   38.28                80
 01/25/2021   18:26:16   (  -0.00, -75.33) (  -0.08, -75.73)   45.39                80
 01/26/2021   18:10:11   (   0.00, -75.35) (   0.94, -71.20)  472.87                80